Polyhydron make
Check Valves are reliable hence require very little attention
from user. However it is necessary that following points must be
kept in mind while storage, operation, commissioning and
maintenance.

Storage :

During storage
take care that this valve is properly covered and well
lubricated. This will prevent ingress of dust and dirt in working
mechanism and during commissioning it will be easy to install the
same.

Operation :

The check valve
consists of a stationary seat, a movable poppet and a spring. The
valve is closed against the flow until pressure at its
inlet working over the exposed area of the poppet creates
sufficient force to overcome the spring. Once the poppet is
forced from its seat, the flow of hydraulic fluid is around
and through the poppet to the outlet of the valve.